Marking pen



FIG. 1 is a perspective view of a marking pen showing my new design inan exploded condition;

FIG. 2 is a perspective view thereof with the cap member in place;

FIG. 3 is a front view;

FIG. 4 is a left side view, the right side being a mirror image thereof;

FIG. 5 is a rear view;

FIG. 6 is a top view;

FIG. 7 is a bottom view;

FIG. 8 is a front view of the cap member, shown separately for ease ofillustration; and,

FIG. 9 is a sectional view taken along 9—9 line in FIG. 8.

The ornamental design for a marking pen, as shown and described.